🐞 fix: 增加错误之后对已解析段落的缓存功能,再次重试时不再重头开始

解析长视频时,当附件大小过大时不再调用后进行报错,而是将附件进行分批次发送

在每篇笔记开头默认增加地址来源链接,对模糊处可溯源

backend/app/services/note.py

@@ -1,7 +1,6 @@
 import json
 import logging
 import os
-import re
 from dataclasses import asdict
 from pathlib import Path
 from typing import List, Optional, Tuple, Union, Any
@@ -32,7 +31,8 @@ from app.services.constant import SUPPORT_PLATFORM_MAP
 from app.services.provider import ProviderService
 from app.transcriber.base import Transcriber
 from app.transcriber.transcriber_provider import get_transcriber, _transcribers
-from app.utils.note_helper import replace_content_markers
+from app.utils.note_helper import replace_content_markers, prepend_source_link
+from app.utils.screenshot_marker import extract_screenshot_timestamps
 from app.utils.status_code import StatusCode
 from app.utils.video_helper import generate_screenshot
 from app.utils.video_reader import VideoReader
@@ -182,6 +182,8 @@ class NoteGenerator:
                     platform=platform,
                 )
 
+            markdown = prepend_source_link(markdown, str(video_url))
+
             # 5. 保存记录到数据库
             self._update_status(task_id, TaskStatus.SAVING)
             self._save_metadata(video_id=audio_meta.video_id, platform=platform, task_id=task_id)
@@ -353,6 +355,10 @@ class NoteGenerator:
 
         # 判断是否需要下载视频
         need_video = screenshot or video_understanding
+        if screenshot and not grid_size:
+            grid_size = [2, 2]
+
+        frame_interval = video_interval if video_interval and video_interval > 0 else 6
         if need_video:
             try:
                 logger.info("开始下载视频")
@@ -365,10 +371,10 @@ class NoteGenerator:
                     self.video_img_urls=VideoReader(
                         video_path=str(self.video_path),
                         grid_size=tuple(grid_size),
-                        frame_interval=video_interval,
-                        unit_width=1280,
-                        unit_height=720,
-                        save_quality=90,
+                        frame_interval=frame_interval,
+                        unit_width=960,
+                        unit_height=540,
+                        save_quality=80,
                     ).run()
                 else:
                     logger.info("未指定 grid_size，跳过缩略图生成")
@@ -540,6 +546,7 @@ class NoteGenerator:
             _format=formats,
             style=style,
             extras=extras,
+            checkpoint_key=task_id,
         )
 
         try:
@@ -592,7 +599,7 @@ class NoteGenerator:
         :param video_path: 本地视频文件路径
         :return: 替换后的 Markdown 字符串
         """
-        matches: List[Tuple[str, int]] = self._extract_screenshot_timestamps(markdown)
+        matches: List[Tuple[str, int]] = extract_screenshot_timestamps(markdown)
         for idx, (marker, ts) in enumerate(matches):
             try:
                 img_path = generate_screenshot(str(video_path), str(IMAGE_OUTPUT_DIR), ts, idx)
@@ -615,14 +622,7 @@ class NoteGenerator:
         :param markdown: 原始 Markdown 文本
         :return: 标记与对应时间戳秒数的列表
         """
-        pattern = r"(?:\*Screenshot-(\d{2}):(\d{2})|Screenshot-\[(\d{2}):(\d{2})\])"
-        results: List[Tuple[str, int]] = []
-        for match in re.finditer(pattern, markdown):
-            mm = match.group(1) or match.group(3)
-            ss = match.group(2) or match.group(4)
-            total_seconds = int(mm) * 60 + int(ss)
-            results.append((match.group(0), total_seconds))
-        return results
+        return extract_screenshot_timestamps(markdown)
 
     def _save_metadata(self, video_id: str, platform: str, task_id: str) -> None:
         """
@@ -636,4 +636,4 @@ class NoteGenerator:
             insert_video_task(video_id=video_id, platform=platform, task_id=task_id)
             logger.info(f"已保存任务记录到数据库 (video_id={video_id}, platform={platform}, task_id={task_id})")
         except Exception as e:
-            logger.error(f"保存任务记录失败：{e}")
+            logger.error(f"保存任务记录失败：{e}")